New spongelike structure converts solar energy into steam.
A new material structure developed at MIT generates steam by soaking up the sun.
The structure â a layer of graphite flakes and an underlying carbon foam â is a porous, insulating material structure that floats on water. When sunlight hits the structureâs surface, it creates a hotspot in the graphite, drawing water up through the materialâs pores, where it evaporates as steam. The brighter the light, the more steam is